Search a number
-
+
38345311 = 47838017
BaseRepresentation
bin1001001001000…
…1101001011111
32200011010212201
42102101221133
534304022221
63445512331
7643633624
oct222215137
980133781
1038345311
111a710444
1210a126a7
137c37644
14514234b
153576891
hex2491a5f

38345311 has 4 divisors (see below), whose sum is σ = 38358112. Its totient is φ = 38332512.

The previous prime is 38345303. The next prime is 38345323. The reversal of 38345311 is 11354383.

38345311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11354383 = 19358831.

It is a cyclic number.

It is not a de Polignac number, because 38345311 - 23 = 38345303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38345311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38345381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775 + ... + 8791.

It is an arithmetic number, because the mean of its divisors is an integer number (9589528).

Almost surely, 238345311 is an apocalyptic number.

38345311 is a deficient number, since it is larger than the sum of its proper divisors (12801).

38345311 is an equidigital number, since it uses as much as digits as its factorization.

38345311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12800.

The product of its digits is 4320, while the sum is 28.

The square root of 38345311 is about 6192.3590819655. The cubic root of 38345311 is about 337.2128286067.

Adding to 38345311 its reverse (11354383), we get a palindrome (49699694).

The spelling of 38345311 in words is "thirty-eight million, three hundred forty-five thousand, three hundred eleven".

Divisors: 1 4783 8017 38345311